Everytime I eat pistachios or pistachio flavored ice cream, my tongue gets itchy and it drives me nuts! (no pun intended)
Does this mean I'm allergic to them?
Best thing to do is NOT eat anything that makes your mouth itchy. Yes, you probably are allergic to pistachios. But thats not a big deal, read the labels and avoid them, its not like pistachios are a necessary food item.
Sounds like it to me. I have a couple of food allergies, and my whole mouth, tongue, and throat can get scratchy. One of the biggest differences (and way to tell) between food intolerance and allergy is the scratchy mouth and throat symptom. I would go to your doctor and get a referral for an allergist who can give you skin tests to determine any allergies, food or otherwise. Nut allergies can be dangerous like seafood allergies and not something you want to chance.